120 lines
3.9 KiB
Java
120 lines
3.9 KiB
Java
/*
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* Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.StringTokenizer;
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import jdk.test.lib.JDWP;
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import static jdk.test.lib.Asserts.assertFalse;
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import jdk.test.lib.process.ProcessTools;
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/**
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* Launches the debuggee with the necessary JDWP options and handles the output
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*/
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public class DebuggeeLauncher implements StreamHandler.Listener {
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public interface Listener {
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/**
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* Callback to use when a module name is received from the debuggee
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*
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* @param modName module name reported by the debuggee
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*/
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void onDebuggeeModuleInfo(String modName);
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/**
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* Callback to use when the debuggee completes sending out the info
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*/
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void onDebuggeeSendingCompleted();
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}
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private int jdwpPort = -1;
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private static final String DEBUGGEE = "AllModulesCommandTestDebuggee";
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private static final String JDWP_OPT = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=0";
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private Process p;
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private final Listener listener;
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/**
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* @param listener the listener we report the debuggee events to
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*/
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public DebuggeeLauncher(Listener listener) {
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this.listener = listener;
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}
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/**
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* Starts the debuggee with the necessary JDWP options and handles the
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* debuggee's stdout output. stderr might contain jvm output, which is just printed to the log.
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*
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* @throws Throwable
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*/
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public void launchDebuggee() throws Throwable {
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ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(JDWP_OPT, DEBUGGEE);
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p = pb.start();
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StreamHandler inputHandler = new StreamHandler(p.getInputStream(), this);
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StreamHandler errorHandler = new StreamHandler(p.getErrorStream(), l -> System.out.println("[stderr]: " + l));
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inputHandler.start();
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errorHandler.start();
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}
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/**
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* Terminates the debuggee
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*/
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public void terminateDebuggee() {
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if (p.isAlive()) {
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p.destroyForcibly();
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}
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}
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/**
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* Gets JDWP port debuggee is listening on.
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*
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* @return JDWP port
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*/
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public int getJdwpPort() {
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assertFalse(jdwpPort == -1, "JDWP port is not detected");
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return jdwpPort;
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}
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@Override
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public void onStringRead(String line) {
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System.out.println("[stdout]: " + line);
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if (jdwpPort == -1) {
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JDWP.ListenAddress addr = JDWP.parseListenAddress(line);
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if (addr != null) {
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jdwpPort = Integer.parseInt(addr.address());
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}
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}
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StringTokenizer st = new StringTokenizer(line);
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String token = st.nextToken();
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switch (token) {
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case "module":
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listener.onDebuggeeModuleInfo(st.nextToken());
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break;
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case "ready":
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listener.onDebuggeeSendingCompleted();
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break;
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}
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}
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}
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